Soil Bacterial Diversity and Its Relationship with Soil CO 2 and Mineral Composition: A Case Study of the Laiwu Experimental Site

Hongying Zhang, Zongjun Gao, Mengjie Shi and Shaoyan Fang
Additional contact information
Hongying Zhang: College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Zongjun Gao: College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Mengjie Shi: College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Shaoyan Fang: College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China

IJERPH, 2020, vol. 17, issue 16, 1-20

Abstract: To better understand the characteristics of soil bacterial diversity in different environments, the Laiwu Qilongwan experimental site was selected as it is of great significance for the study of geochemical cycles. The soil CO 2 , mineral composition and bacterial community were analyzed by an EGM-4 portable environmental gas detector, an X-ray diffractometer and 16S rDNA high-throughput sequencing, and soil bacterial diversity and the relationship between soil bacterial diversity and environmental factors were studied. The results showed that with increasing soil depth, the CO 2 content increased, the feldspar and amphibole contents increased, the quartz content decreased, the richness of the soil bacterial community increased, the relative richness of Nitrospirae increased, and Chloroflexi decreased. The dominant bacteria were Proteobacteria, Actinobacteria and Acidobacteria. There were slight differences in soil CO 2 , mineral composition and dominant bacterial flora at the same depth. Actinobacteria, Proteobacteria and Firmicutes were the dominant phyla of L02. The CO 2 was lowest in bare land, and the quartz and K-feldspar contents were the highest. Soil CO 2 mainly affected the deep bacterial diversity, while shallow soil bacteria were mainly affected by mineral components (quartz and K-feldspar). At the same depth, amphibole and clay minerals had obvious effects on the bacterial community, while CO 2 had obvious effects on subdominant bacteria.

Keywords: soil bacteria; soil CO 2; land use type; mineral composition; Alpha diversity (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1660-4601/17/16/5699/pdf (application/pdf)
https://www.mdpi.com/1660-4601/17/16/5699/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jijerp:v:17:y:2020:i:16:p:5699-:d:395663

Access Statistics for this article

IJERPH is currently edited by Ms. Jenna Liu

More articles in IJERPH from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().